My phone is having an issue where it will randomly disconnect from the mobile network. When this happens, I do not receive texts, phone calls, etc...Im completely disconnected. It also does not let me know this happens...the phone appears to have service until you actual attempt to use the service (make a phone call, etc). What is causing this? This has picked up a lot recently, but this has happened before as well (both before and after rooting). Any help is appreciated.